package com.tegtech.starter.security.filter;

import java.io.IOException;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;

import com.google.common.collect.Lists;
import com.tegtech.common.utils.http.RequestUriMatcher;
import com.tegtech.starter.security.SecurityUtils;
import com.tegtech.starter.security.domain.LoginUser;
import com.tegtech.starter.security.service.TokenService;

/**
 * token过滤器 验证token有效性
 * @Author Jun
 * @date 2020年5月30日 下午11:19:26
 */
@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {
	
	@Autowired
	private TokenService tokenService;
	
	// 允许匿名访问的uri，多个用逗号隔开
	@Value("${token.excludeUris}")
	private String excludeUris;

	@Override
	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
		// 过滤无需进行jwt token校验的请求
		if(RequestUriMatcher.antMatchs(Lists.newArrayList(excludeUris.split(",")), request.getRequestURI())) {
			chain.doFilter(request, response);
			return;
		}
		LoginUser loginUser = tokenService.getLoginUser(request);
		if (loginUser != null && SecurityUtils.getAuthentication() == null) {
			tokenService.verifyToken(loginUser);
			UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(loginUser, null, loginUser.getAuthorities());
			authenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
			SecurityContextHolder.getContext().setAuthentication(authenticationToken);
		}
		chain.doFilter(request, response);
	}
}
